چرا در اتاق باز است؟

A careful pronunciation is:

cherâ dar-e otâq bâz ast?

A very natural everyday spoken version is:

cherâ dar-e otâq bâze?

A few notes:

• چرا = cherâ
• درِ اتاق = dar-e otâq
• باز = bâz
• است = ast, but in conversation it often becomes -e

Here is the structure:

• چرا = why
• درِ اتاق = the room’s door / the door of the room
• باز = open
• است = is

So the sentence structure is basically:

Why + the room door + open + is?

That is normal Persian word order for this kind of sentence.

Because در in Persian can mean two different things:

• در = door
• در = in / at / inside

In this sentence, the intended reading is door. The phrase is really درِ اتاق, meaning the door of the room.

If you tried to read it as the preposition in, the sentence would not make much sense here. Context tells you which meaning is correct.

Yes. It is pronounced درِ اتاق with ezafe.

The ezafe is the short -e sound that links nouns and shows a relationship like of in English. So:

• درِ اتاق = door of the room

In normal Persian writing, this -e is often not written, so learners have to supply it from context. That is why you see در اتاق, but you read it as dar-e otâq.

Because Persian usually uses ezafe instead of a separate word like English of.

So instead of saying something like door of room with a separate of, Persian links the two nouns directly:

• درِ اتاق
• literally: door-e room
• naturally: the room’s door or the door of the room

This is one of the most common patterns in Persian.

Yes, here باز means open.

That is a very common learner question, because باز can also mean again in other sentences.

Here it means open because of its position and grammar:

• it comes after the subject noun phrase
• it is followed by است
• so it is acting as a predicate adjective: is open

So in this sentence:

• باز است = is open

Not:

• again

Persian does not form questions the way English does. English says:

• Why is the door open?

But Persian does not invert the verb and subject in this kind of sentence. It keeps a more regular statement-like order:

• چرا درِ اتاق باز است؟
• literally: Why the room door open is?

So this is completely normal Persian grammar. No equivalent of English do-support or inversion is needed here.

است is the standard form of is.

You can also hear:

• هست in some contexts
• or, very commonly in speech, just -ه attached to the adjective

So these are possible styles:

• چرا درِ اتاق باز است؟ = careful / standard
• چرا درِ اتاق بازه؟ = very common spoken Persian

In this sentence, است is perfectly correct and natural, especially in written or careful speech.

Persian usually does not have a separate word that works exactly like English the.

So درِ اتاق can naturally mean:

• the door of the room
• the room door

Definiteness is often understood from context. That is very normal in Persian.

The subject is درِ اتاق.

That whole noun phrase means:

• the room’s door
• the door of the room

Then باز است tells you something about that subject:

• is open

So the sentence is built like:

• subject: درِ اتاق
• predicate: باز است

In everyday speech, the most natural version is often:

چرا درِ اتاق بازه؟

Compared with the written-style sentence:

• باز است becomes بازه

This is a very common spoken reduction, and learners will hear it a lot in conversation.

Yes. To help learners, it can be written as:

چرا درِ اتاق باز است؟

That small mark on درِ shows the ezafe more clearly.

Without it, the usual spelling is still: چرا در اتاق باز است؟

Native readers usually understand it easily from context, but for learners, درِ اتاق is much clearer.